The New York Joint Terrorism Task Force arrested Quazi Mohammad Rezwanul Ahsan Nafis on October 17, 2012, as he attempted to detonate what he believed to be a 1000-pound truck bomb outside the New York Federal Reserve Building.

Jose Pimentel, arrested on November 19, 2011, planned to target U.S. servicemen returning from abroad, post offices and police targets, according to officials. He is charged with one count of criminal possession of a weapon as a crime of terrorism, two counts of conspiracy and one count of soliciting or providing support for an act of terrorism.

One of two suicide bombers who attacked African Union troops on October 29, 2011, was an American citizen, according to the Al Qaeda-linked Somali terrorist organization Al Shabaab. Abdisalan Hussein Ali, 22, was identified by his family in an audio message claiming credit for the bombing. The recorded message was released on the day of the attack by Al Shabaab on an affiliated Web site.

Mohammad Hassan Khalid, a legal permanent resident from Pakistan living in Baltimore, was charged in an indictment unsealed on October 20, 2011, with soliciting funds for terrorists and recruiting potential terrorists online. He was arrested July 6, 2011.

Manssor Arbabsiar, a 56-year-old naturalized U.S. citizen from Iran was arrested on September 29, 2011 and charged on October 11, 2011 with conspiracy to commit an act of terrorism and conspiracy to murder a foreign official, among other charges. Gholam Shakuri, a member of the Quds Force of the Iranian Islamic Revolutionary Guards Corps who remains at large, was also charged.

One of the most significant developments in domestic terrorism since the September, 11, 2001, terrorist attacks is the role that a growing number of American citizens and residents motivated by radical interpretations of Islam have played in criminal plots to attack Americans in the U.S. and abroad.

Two Iraqi nationals living legally in the United States as refugees have been arrested in Bowling Green, Kentucky, for allegedly conspiring to send missiles, other weapons and money to Al Qaeda in Iraq and other Iraqi insurgents.

A “lone wolf” is an individual extremist who seeks to commit violent acts on his own without belonging to an organized extremist or terrorist group or cell. While the “lone wolf” description in this case does not fit – Ferhani and Mamdouh conspired together, according to authorities – understanding this phenomenon is critical to responding to the serious threat it poses.

Three American citizens, including two Southern Florida Imams, face charges of providing support to the Pakistani Taliban. Hafiz Khan, the imam at the Flagler Mosque in Miami, and his son Izhar Khan, imam at the Jamaat Al-Mu'mineen Mosque in Margate, were arrested on May 14, 2011 in South Florida. Another of Hafiz Khan's sons, Irfan Khan, was arrested that same day in El Segundo, California.

With a population of over 300 million, the United States is home to a variety of extremists groups and movements from across the ideological spectrum. One of the most striking elements of today's domestic threat picture is the role that a growing number of American citizens and residents motivated by radical interpretations of Islam have played in criminal plots to attack Americans in the U.S. and abroad.

A Saudi national arrested in Texas for allegedly attempting to build and use a weapon of mass destruction described his plan to wage "jihad" and target Americans in blog postings and a personal journal, according to the U.S. Department of Justice.

Seven men, including two Americans, have been charged for allegedly plotting to help the Taliban fight American troops in Afghanistan, according to a February 14, 2011, U.S. Justice Department statement. The men allegedly conspired to sell weapons and drugs to Taliban fighters.

The indictment of eight North Carolina men for engaging in weapons training and conspiring to carry out "violent jihad" overseas serves as a troubling reminder of the increasing threat posed by American Muslim extremists.

Insani Yardim Vakfi (Humanitarian Relief Fund in Turkish, or IHH), an Istanbul-based Islamic charity with links to Hamas, was one of the key organizers of the "Freedom Flotilla," a convoy of ships en route to Gaza that was intercepted by the Israeli Navy on May 31, 2010.

An emerging terror threat from Yemen and Somalia "pose[s] new challenges to the United States and other countries fighting extremism worldwide," according to a January 2010 U.S. Senate Committee on Foreign Relations report titled "Al Qaeda in Yemen and Somalia: A Ticking Time Bomb."

Three Al Qaeda associates have been charged for attempting to transport narcotics for a Colombian terrorist organization and providing part of the proceeds to Al Qaeda, marking the first time associates of the international terrorist network have been charged with narco-terrorism offenses in a United States federal court.

An Iranian who attempted to procure a cache of electronics and military equipment to prepare the government of Iran for future conflicts with the United States has been sentenced to five years in prison.

The shooting at the Fort Hood Army base in Texas, which left 12 soldiers and one civilian dead and 32 others injured, has renewed public discussions about the growing Muslim extremist threat in the U.S.

The shooting at the Fort Hood Army base in Texas, which left 12 soldiers and one civilian dead and 29 others injured, is the latest in a series of attacks and plots targeting American military by extremists motivated by a radical interpretation of Islam.

Israeli and Indian intelligence agencies have increased security at Jewish institutions in India in response to threats by a Pakistani-based terrorist group responsible for a series of coordinated terror attacks in Mumbai, India, in November 2008 that killed over 170 people and wounded approximately 300 others.

In response to recent standoffs between Israeli police and Palestinians at Al Aqsa Mosque in Jerusalem, Al Shabaab, a U.S.-designated terrorist group that seeks to overthrow the Somali government, has threatened to attack Israel.

A Massachusetts man who allegedly planned to attack a U.S. shopping mall and American troops in Iraq has been arrested for attempting to wage "violent jihad" against America. His arrest is the latest in a series of terror-related charges in the U.S. since September.

A series of terrorist plots foiled in the span of one week illustrate the continuing threat against the United States posed by those motivated by radical interpretations of Islam. During the week of September 21, several men were charged in separate plots to bomb a federal building, a 60-story skyscraper, a major city's transit system and a U.S. military base.

Revolution Muslim (RM), a small New York City-based Muslim extremist organization, has posted to its Web site a poem asking God to "kill the Jews." The poem, posted on October 7, 2009, is signed by the group's leader Yousef al-Khattab.

A suspected international terrorist with alleged links to the deadly 1994 attack on a Jewish community center in Argentina has been nominated by President Mahmoud Ahmadinejad to serve as Iran's defense minister.

A Long Island man has pleaded guilty to providing information about New York City transit systems to Al Qaeda for potential terrorist attacks and to firing rockets at an American military base in Afghanistan.

Adam Yahiye Gadahn, an American who joined Al Qaeda in the late 1990s, threatened to attack “Zio-Crusader interests everywhere” in a video released by Al Sahab, Al Qaeda’s media wing, on June 13, 2009.

An American convert to Islam who killed one uniformed American soldier and shot another at a military recruiting center in Little Rock, Arkansas, planned to target other U.S. military centers and Jewish institutions.

A Lebanese-born Swedish man has been convicted on terrorism charges for attempting to set up a jihad training camp in Bly, Oregon and operating multiple Web sites that distributed terrorist training materials.

Moeed Abdul Salam, a little-known American terror propagandist, was killed in Pakistan during the course of a raid on his apartment by Pakistani troops less than two months after Anwar Al-Awlaki and Samir Khan were killed in a U.S. drone strike in Yemen.

Al Qaeda in the Arabian Peninsula's (AQAP) media arm released a video on December 20, 2011, featuring a eulogy for Anwar al-Awlaki and a never before seen video message from him in an effort to reach al-Awlaki's Western audience and perpetuate his message after his death.

The Al Qaeda-linked Somali militant group Al Shabaab apparently began posting on the social media website Twitter on December 7, 2011, in what is the latest exploitation of the internet by terrorists and their supporters.

The seventh issue of the English-language terrorist magazine, Inspire, released online by the media wing of Al Qaeda in the Arabian Peninsula (AQAP) on September 27, 2011, focuses on the ten-year anniversary of the September 11th attacks. The issues was released just days before Samir Khan, an American citizen believed to be the principal author of Inspire, was reported killed in a drone strike in Yemen along with influential jihadist propagandist Anwar al-Awlaki, who was also a regular contributor to the magazine.

A Pakistani-born permanent legal resident from Virginia has been charged with providing material support to a foreign terrorist organization by producing a video "glorifying violent jihad" on its behalf.

A 21-year-old Pennsylvania man has been indicted on terror-related charges for allegedly using the Internet to encourage violence against Americans. Emerson Winfield Begolly, of New Bethlehem, Pennsylvania, was charged on July 14, 2011, with soliciting crimes of violence, including acts of terrorism, and with posting bomb-making materials online.

The sixth issue of the English-language terrorist magazine, Inspire, released online by the media wing of Al Qaeda in the Arabian Peninsula (AQAP) on July 19, 2011, focuses mostly on the martyrdom of Osama bin Laden and other AQAP fighters.

The Fifth issue of the English-language terrorist magazine Inspire, released online by the media wing of Al Qaeda in the Arabian Peninsula (AQAP) on March 29, 2011, focuses mostly on the uprisings across the Middle East and North Africa.

A significant number of American Muslim extremists involved in terror-related activity over the past several years have been influenced by an abundance of terrorist propaganda and recruitment techniques online.

The fourth issue of the English-language terrorist magazine Inspire, released online by the media wing of Al Qaeda in the Arabian Peninsula (AQAP) on January 16, 2011, calls for terrorist attacks in the U.S. and provides instructions on how to destroy buildings.

Al Qaeda's affiliate in Yemen – which sent explosive-laden packages on U.S.-bound cargo flights in October – has threatened to "bleed the enemy to death" by sending similar explosive devices on both commercial and passenger aircrafts in Western countries.

In its latest effort to reach Western audiences, Al Qaeda has released its first-ever English-language magazine that provides detailed bomb making instructions and calls on followers to "destroy" America.

Expressions of anti-Semitism and calls for violence against Israel and Jews have exploded online in response to the Israeli naval operation to stop a flotilla of ships en route to Gaza on May 31, 2010.

American Muslim ideologues living abroad are using their online pulpits to reach and influence extremists in the U.S. with ideologies of extreme intolerance and violence. Through English-language propaganda distributed on a variety of online platforms, these ideologues have not only encouraged attacks in the U.S., but also recruited followers to join terrorist groups overseas.

In the aftermath of the November 5 shootings at the Fort Hood military base in Texas, numerous posts expressing support for the suspected shooter have appeared on a range of English-language Web sites and forums.

Adam Yahiye Gadahn, an American Muslim convert who joined Al Qaeda in the late 1990s, urged Muslims to provide assistance to suicide bombers with "money and men" and criticized America and Israel as "forces of evil" in a video produced by Al Sahab, Al Qaeda's media wing, on April 13, 2009.

A video featuring two men identifying themselves as Americans fighting in southern Somalia has surfaced, according to reports. A spokesperson for the FBI office in Minneapolis, which is investigating a group of Americans who have left their homes to join a terrorist group in Somalia, reportedly said the video was brought to his office's attention on April 5, 2009.

The Popular Front for the Liberation of Palestine (PFLP), a terrorist organization responsible for attacks against Israelis since the 1960s, called for an “escalation and expansion of direct action, particularly the takeover of embassies of Israel and its allies” on its English-language Web site.

Hamas, the terrorist organization which now governs the Gaza Strip, continues to use the media to indoctrinate children as young as pre-school into its cause, promote terrorist activity and incite hatred of Jews and Israelis.

Ayman al-Zawahiri, Al Qaeda’s second in command, threatened Israel and “Jewish interests” in a 90-minute audio message billed as the first installment of responses to more than 900 questions submitted on Web sites commonly used by Islamic militants.

In a video posted on a Web site commonly used by Islamic militants, Ayman al-Zawahiri, Al Qaeda’s second in command, threatens that Al Qaeda will take revenge on America for killing one of their top chiefs.

Al Qaeda has announced the release of eight previously recorded videos in a format designed for cell phones. The announcement was released on Web sites commonly used by Islamic militants by Al Qaeda’s media wing Al Sahab on January 4, 2008.

The Popular Front for the Liberation of Palestine (PFLP), a terrorist organization responsible for attacks against Israelis since the late 1960s, has launched an English-language Web site in conjunction with the 40th anniversary of its founding.

Despite being bombarded by Israeli forces in Lebanon, Al-Manar television and Al-Nour radio, Hezbollah's main propaganda arms, continue to operate by utilizing the services of U.S.-based Internet companies.

The first issues of Hamas' on-line magazine for kids since the Palestinian terrorist organization won control of the Palestinian parliament encourages kids to become suicide bombers and advocates hatred of Jews.

The saga of Younis Tsouli, a 22-year-old British national arrested near London in October 2005 for allegedly plotting a terrorist attack, illustrates the growing threat posed by terrorist sympathizers seeking to engage in activity beyond cyberspace.

Three editions of Sout Al Khilafa (Arabic for “Voice of the Caliphate”), a new online video newscast that claims to be the “voice of Al Qaeda on the Internet,” have been posted to the Internet by the Global Islamic Media Front (GIMF), a long-time “umbrella” propaganda group for Islamic terrorists.

A group calling itself “Jihad Brigades in Palestine – the military wing of Al Qaeda in Palestine” posted a link on an Al Qaeda affiliated Web site to an online video taking credit for missile attacks on Jewish settlements in Gaza at the end of July.

The European Court of Human Rights' decision to allow the extradition of five terrorism suspects from the United Kingdom to the United States has paved the way for faster extradition of terrorism suspects to the United States.

A Canadian citizen from Chicago has been convicted for his role in a planned terrorist attack against a Danish newspaper and for providing support to Lashkar-e-Taiba (LeT), the Pakistani militant group with links to Al Qaeda.

The trial of a Pakistani woman with alleged links to Al Qaeda is the latest terror-related trial during which defendants and their supporters have claimed that American courts are controlled by Israel.

A prominent member of the Islamic opposition party in Yemen admitted in a New York court to providing funds to Hamas. On August 7, 2009, Sheikh Mohammed Ali Hasan al-Moayad, 60, and his associate, Mohammed Mohsen Yahya Zayed, 35, pleaded guilty in a Brooklyn federal court to conspiring to provide material support to the Palestinian terrorist group.

An Al Qaeda operative entered the U.S. one day before the September 11 terrorist attacks and was held in the U.S. without charges for more than seven years pleaded guilty to attending terrorist training camps and assisting Al Qaeda operations in the U.S.

An Afghan drug trafficker has been charged in Manhattan federal court for allegedly conspiring to finance the Taliban’s terrorist activities, including their efforts to forcibly expel the U.S. from Afghanistan.

An Iraqi-born Dutch citizen sentenced to 25 years in prison for conspiring to kill Americans overseas, is the first person to be prosecuted in a U.S. court for terrorism offenses against Americans in Iraq, according to the U.S. Department of Justice.

The en banc United States Court of Appeals for the Seventh Circuit upheld a lower court ruling against three Islamic charities for complicity in the murder of a 17-year old American citizen in the West Bank.

The United States Court of Appeals for the Seventh Circuit overturned a landmark judgment against four Islamic charities and an alleged fundraiser for the Palestinian terrorist group Hamas for its role in the murder of a 17-year old American citizen in the West Bank.

Khalid Sheikh Mohammed, a former senior Al Qaeda operative, told a U.S. military court he personally beheaded Wall Street Journal reporter Daniel Pearl, according to testimony released by the Pentagon on March 22, 2007.

The Supreme Court ruled on June 29, 2006, that that the military commissions established by the Bush Administration to try terror suspects lack "power to proceed because [their] structure and procedures violate" both the Uniform Code of Military Justice (UCMJ) and the Geneva Conventions, the international agreements that cover treatment of prisoners of war.

In a major terrorism case, the government failed to convince a federal jury in Florida that Sami al-Arian, former University of South Florida professor and a U.S. resident, acted to send funds to the Palestinian Islamic Jihad (PIJ) terror organization for the purpose of committing terrorist acts.